Gyratory crusher with mating friction and drag rings on head and inner shell



Dec. 18, 195] w, LIPPMANN 2,579,239

GYRATORY CRUSHER WITH MATING CTIO ND DRAG RINGS-ON HEAD AND IN SHEL I Filed Oct. 22, 1948 2 SHEETS-SHEET 1 v E SQ nN to Fnn n |NVENTOR g ARTHUR W. LIPPMANN i'imiii ATTORNEYS 1 A. w. LIPPMANN 2,579,239

GYRATORY CRUSHER WITH MATI FRICTIO ND DRAG RINGS ON HEAD AND NER SHEL Filed 001,. 22, 1948 2 SHEETS-SHEET 2 TOR MANN Z7 /y c ATTOR INVEN ARTHuRiwuPP Patented Dec. 18, 1951 UNITED STATES NT OFFICE GYRATORY CRUSHER WITH MATING FRIC- TION AND DRAG RINGS ON HEAD AND INNER SHELL Arthur W. Lippmann, Milwaukee, Wis., assignor to Lippmann Engineering Works, Milwaukee,

Wis.

Application October 22, 1948, Serial No. 55,843

2 Claims. (Cl. 241-215) so as to effectively prevent the entrance of rock dust and other debris to said bearings.

' Another salient object of my invention is to provide a positive friction drag between the crushing head and the stationary frame and still permit the effective gyratory action of said head, whereby tendency of the head to rotate with the driving sleeve will be eliminated or reduced to a minimum.

A further important object of my invention is to provide a combination sealing device and drag between the crushing head and the frame including novelty arranged sealing and friction rings.

A still further object of my invention is to provide a combination sealing and drag means for the crushing head of gyratory crushers, which will be of an exceptionally simple nature and which can be incorporated with the crusher at a. comparatively low cost and which will effectively stand up under continuous hard usage.

With these and other objects in view, the invention consists in the novel construction, arrangement and formation of parts, as will be hereinafter more specifically described and claimed, and illustrated in the accompanying drawings, in which drawings,

Figure l is a central vertical sectional view a gyratory crusher embodying the features of my invention, the section being taken on the line |I of Figure 2, looking in the direction of the arrows.

Figure 2 is a horizontal sectional view taken on the line 2 2 of Figure 1, looking in the direction of the arrows.

Figure 3 is an enlarged fragmentary detail sectional view, taken on the line 3--3 of Figure 1, looking in the direction of the arrows illustrating the novel arrangement of the sealing and drag rings.

Referring to the drawings in detail, wherein similar reference characters designate corresponding parts throughout theseveral views, the letter G generally indicates a gyratory crusher having the novel sealing and drag means M incorporated therewith.

The gyratory crusher G can be of the general character shown in my pending application, Serial No. 23,799, filed April 28, 1948. Hence the crusher includes a base frame 5, which can be firmly secured to any suitable support (not shown). As illustrated, the frame 5 includes a cylindrical side wall 6 having formed on its upper end an outwardly extending annular flange 1. Formed on or carried by the frame 5 is an axially disposed reservoir shell wall 8 for a lubricant, and communicating with one side of the reservoir is a bearing sleeve 9. The reservoir can be connected with the outer cylindrical wall 6 by radially extending connecting webs I0. The wall 8 also forms a support for the crushing head H and the upper edge of this wall is formed in a certain manner, as will be later set forth.

Mounted above the crushing head ll is the bowl l2 for the rock to be crushed. The head l2 includes a heavy supporting ring l3 which can be slidably mounted within the wall 6. The ring l3 also can have formed thereon 0n outwardly extending flange or lugs M, and the ring can be united with the flange l by bolts l5. The desired number of spacer washers or shims It can be placed on the bolts I5 for accurate positioning of the ring l3 the desired height Within the base frame 5. The crushing head also includes the crushing concave I! which is held on the ring in any desired way.

The crushed head H includes a substantially disc shaped main body portion l8 on whichis fitted the crushing mantle Hi. The mantle l9 and the body 18 are mounted on a centrally disposed shaft 20.

Rotatably mounted upon the reservoir shell wall is a drive sleeve 2 I. Suitable roller hearings or the like 22 are provided for supporting the drive sleeve and the inner and outer races of the bearings are supported respectively by the sleeve 2| and the shell wall 8. The upper end of the sleeve carries the eccentric roller bearing 23 and the main body portion ll! of the crushing head II is supported by the bearing 23. Upon rotation of the drive sleeve 2 I, the crushing head will be gyrated relative to the concave H of the crushing head l2. The sleeve 2| can be rotated in any desired way, such as through the medium of a drive shaft 24, which extends into the frame 5 through the bearing sleeve 9. The shaft 24 has keyed or otherwise secured thereto a drive gear 25, which meshes with a beveled ring gear 26 rigidly fastened to the drive sleeve 2 I.

Particular attention is called to the main body portion l8 of the crushing head II, and it is to be noted that the periphery thereof is provided with a depending annular flange or rib 21, which is internally tapered and which extends below the roller bearing 23. Particular attention is also drawn to the fact that the upper end of the shell wall 8 is also provided with an annular flange or rib 28, which is externally tapered and which is located directly below the flange or rib 21. Actually the flanges or ribs 21 and 28 and their tapers form a part of the novel sealing and drag mechanism M, which will now be described.

The sealing and dra means'M includes a lower sealing ring 29 carried by the flange or rib 28. This rib or fiange 28 is preferably provided with an annular groove 30 in which the ring is seated. In order to'prevent rotationof the ring, the same can have threaded therein at spaced points depending studs 3 l, and these studs are detachably fitted in openings provided for that purpose in the bottom Wall of the groove 30. A second sealing and drag ring 32 is carried by the depending flange or rib 21 carried by the body 18 of the crushing head ll. One of the rings 29 and 32 is formed relatively wider than the other and, as illustrated, the upper ring 32 is formed considerably wider than the ring 29, for a purpose, which will later appear. The flange or rib 21 can also be provided with an annular groove 33 for receiving the ring 32. To prevent rotation of the ring 32 the groove 33 has threaded inits top Wall depending studs 34 and these studs are received in sockets 35 formed in the upper face of the ring. The ring is slidably mounted on the studs, so that this ring will have free up and down movement. It is essential that oneof the rings can move up and down relative to the. other and in the form of the invention shown in the drawings, the upper ring is mounted for this movement. This movement is desirable so that the frictional contact between the two rings 29 and 32 can be assured at all times and the ring 32 is spring urged toward the ring 29. Expansion coil springs 36 are employed for this purpose and these springs are received in sockets 31 formed in the rib or flange 21, and bear down on the upper face of the ring.

The'rings' can be made from any desired material best suited for the purpose intended and as an example, the ring 29 can be made from bronze and the upper ring 32 from mild steel.

During the gyratory action of the head II, the wide upper ring 32 slides back and forth over the upper surface of the lower ring 29 and this is permitted due to the width of said upper ring. As the rings are in firm contact with one another a frictional drag is set up which will prevent or reduce the tendency of the head I l to rotate with the drive sleeve 2| during the gyratory action of said head.

From the foregoing description it can be seen that an exceptionally simple and durable means has been provided for sealing the upper and lower main bearings 22 and 23, and that the sealing means function as a drag.

It is to be noted that the sealing and drag rings 29 and 32 are located directly intermediate the main bearin s 22 and 23 and hence the seal is at a desired point.

Changes in details may be made without departing from the spirit or the scope of my invention but what I claim as new is:

1. In a gyratory crusher, a frame including an outer main wall and an inner shell wall, a crushing concave carried by the main wall, a driven sleeve in said inner shell wall, means for driving said sleeve, a crushing head located in said concave, a bearing carried by the inner shell wall rotatably supporting the sleeve, a hearing between said sleeve and said head, said head having a depending annular rib and said inner shell Wall having an upper annular rib, said ribs being grooved, mating bearing and friction drag rings mounted against rotation in said grooves having flat smooth engaging faces, and means resiliently urging one ring toward the other.

2. In a gyratory crusher, a frame including an outer main wall and an inner shell wall, a crushing concave carried by the main wall, a driven sleeve in said inner shell wall, means for driving said sleeve, a crushing head located in said concave, a bearing carried by the inner shell wall rotatably supporting the sleeve, a bearing between said sleeve and said head, said head having a depending annular rib and said inner shell wall having an upper annular rib, the adjacent faces of said ribs being provided with annular grooves, mating bearing and friction drag rings received in said grooves fixed against rotation having flat smooth engaging faces, and means resiliently urging one ring toward the other, one of said ribs being of less diameter than the other and received therein, said rib of less diameter being below and externally tapered and said other rib being internally tapered.

ARTHUR W. LIPPMANN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,945,791 Rumpel Feb. 6, 1934 1,960,980 Rumpel May 29, 1934 2,066,281 Traylor Dec. 29, 1936 2,148,682 Campbell Feb. 28, 1939 2,310,737 Gruender Feb. 9, 1943 

